Suitable carpet oddly overlooked (3)
I believe the answer is:
apt
'suitable' is the definition.
(I've seen this before)
'carpet oddly overlooked' is the wordplay.
'oddly overlooked' means one should take alternating letters.
The alternating letters of 'carpet' are 'APT'.
(Other definitions for apt that I've seen before include "may be appropriate" , "Befitting" , "apartment in Queens, say" , "Proper" , "Fitting - inclined" .)